Behavior Characteristics of Argon Bubbles on Inner Surface of Upper Tundish Nozzle during Argon Blowing Process
Behavior Characteristics of Argon Bubbles on Inner Surface of Upper Tundish Nozzle during Argon Blowing Process
复制标题
吹氩过程中中间包上水口内表面氩气泡的行为特征
DOI：
10.3390/met8080590
复制
发表时间：
2018-07
期刊：
影响因子：
2.9
通讯作者：
Zhengliang Xue
中科院分区：
文献类型：
--
作者：
Yang Li;Changgui Cheng;Minglei Yang;Zhixuan Dong;Zhengliang Xue
铝镇静钢连铸过程中，中间包水口经常发生堵塞现象，严重扰乱了正常浇注顺序，影响了铸坯质量。一般采用吹氩技术，在上喷嘴内表面形成稳定、连续的氩气膜，以防止生产中上喷嘴堵塞。为了探究该氩膜的形成机理及影响因素，建立了相似比为1:1的上喷嘴吹氩水模型。结果表明，随着氩气流量和拉速的增加，气泡链的数量逐渐增加，且氩气幕出现在上水口的下半部。对于给定的氩气流量，氩气气泡的速度随着铸造速度的增加而逐渐增加，并且随着距上喷嘴顶部的距离的增加而逐渐减小。对于给定的铸造速度，氩气流量为150 L/h时，距上喷嘴顶部6 mm处的氩气气泡的平均速度最大。研究结果可为优化吹氩参数、防止上喷嘴堵塞、提高铸坯质量提供理论和技术依据。
During continuous casting of aluminum-killed steel, clogging of tundish nozzle frequently occurs, which seriously disrupts the normal casting sequences and deteriorates strand quality. Generally, argon blowing technology in the form of a stable and continuous argon film on the inner surface of the upper nozzle is employed to prevent the upper nozzle from clogging in the production. To explore the formation mechanism and influence factors of this argon film, a water model of the upper nozzle with blowing argon with a similarity ratio of 1:1 was built. The results show that the number of bubble chains increases gradually with increasing argon flow rate and casting speed, and the argon gas curtain appears at the bottom half of the upper nozzle. For a given argon flow rate, the velocity of argon gas bubbles increased gradually with increasing casting speed, and decreased gradually with increasing distance from the upper nozzle top. For a given casting speed, the average velocity of argon gas bubbles was largest at a distance from the upper nozzle top of 6 mm with argon flow rate of 150 L/h. The results could provide theoretical and technical basis for the optimization of blowing argon parameters in order to prevent the clogging of upper nozzle and improve strand quality.
登录
查看更多内容
板坯连铸结晶器吹氩大气泡形成机理研究
影响因子：
2.2
作者：
朱苗勇;郑淑国
通讯作者：
郑淑国
影响因子：
2.2
作者：
Luis Trueba;K. Peaslee;Jeffrey D. Smith;M. Karakus
通讯作者：
Luis Trueba;K. Peaslee;Jeffrey D. Smith;M. Karakus
影响因子：
1.8
作者：
H. Esaka;Yuka Kuroda;K. Shinozuka;M. Tamura
通讯作者：
H. Esaka;Yuka Kuroda;K. Shinozuka;M. Tamura
DOI：
10.1007/bf02650074
发表时间：
1994-08
期刊：
Metallurgical and Materials Transactions B
影响因子：
--
作者：
B. Thomas;X. Huang;R. C. Sussman
通讯作者：
B. Thomas;X. Huang;R. C. Sussman
钢连铸结晶器多尺寸氩气泡运动及其对熔体流动影响的数学模型
DOI：
10.1016/s1006-706x(14)60062-5
发表时间：
2014-04
影响因子：
2.5
作者：
Tao ZHANG;Shen DENG;Nan WANG;Zongshu Zou
通讯作者：
Zongshu Zou